Structures of strontium selenite and strontium selenide aluminate sodalites and the relationship of framework structure to vibrational spectra in aluminate sodalites

Matthew E. Brenchley; Mark T. Weller

doi:10.1021/cm00031a015

Structures of strontium selenite and strontium selenide aluminate sodalites and the relationship of framework structure to vibrational spectra in aluminate sodalites

Matthew E. Brenchley, Mark T. Weller

Department of Chemistry

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Abstract

The structures of both Sr[AlO]·(SeO) and its reduced product Sr[AlO]·(Se) have been determined using profile refinements of powder neutron diffraction data. Both crystallize with the simple body centered cubic sodalite structure with strontium showing a tetrahedral coordination around SeO/Se, and selenite showing 24-fold disordering giving rise to a partially occupied distorted cuboctahedron comprising 24 identical deformed SeO trigonal pyramids. The infrared spectra of aluminate sodalites as a function of cage dimensions are discussed.

Original language	English
Pages (from-to)	970-973
Journal	Chemistry of Materials
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/cm00031a015
Publication status	Published - 1993

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abstract = "The structures of both Sr[AlO]·(SeO) and its reduced product Sr[AlO]·(Se) have been determined using profile refinements of powder neutron diffraction data. Both crystallize with the simple body centered cubic sodalite structure with strontium showing a tetrahedral coordination around SeO/Se, and selenite showing 24-fold disordering giving rise to a partially occupied distorted cuboctahedron comprising 24 identical deformed SeO trigonal pyramids. The infrared spectra of aluminate sodalites as a function of cage dimensions are discussed.",

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AU - Weller, Mark T.

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AB - The structures of both Sr[AlO]·(SeO) and its reduced product Sr[AlO]·(Se) have been determined using profile refinements of powder neutron diffraction data. Both crystallize with the simple body centered cubic sodalite structure with strontium showing a tetrahedral coordination around SeO/Se, and selenite showing 24-fold disordering giving rise to a partially occupied distorted cuboctahedron comprising 24 identical deformed SeO trigonal pyramids. The infrared spectra of aluminate sodalites as a function of cage dimensions are discussed.

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Structures of strontium selenite and strontium selenide aluminate sodalites and the relationship of framework structure to vibrational spectra in aluminate sodalites

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